The drummachine of the Anushri by Mutable Instruments is great. Olivier Gillet later expanded on it with his Grids.
My MIdrum is the concept of these generative drums, translated into a compact midi-drummachine.

The drummachine of the Anushri by Mutable Instruments is great. Olivier Gillet later expanded on it with his Grids.
My MIdrum is the concept of these generative drums, translated into a compact midi-drummachine.

MidiThru simply isolates the input using a 6N137 and buffers / splits the signal using 74HC14N.

The adapter input is standard guitar pedal format accepting anything about 9Vdc any polarity, it even functions at about 9Vac, just make sure the LM7805 doesn't get fingerburning hot (fingerwarming hot is ok).